Danfoss VLT HVAC Drive FC 102 Operating Manual page 145

VLT® HVAC Drive FC 102
Operating Guide
9.4.46 WARNING 49, Speed Limit
Cause
The warning is shown when the speed is outside of the specified range in parameter 4-11 Motor Speed Low Limit [RPM] and parame-
ter 4-13 Motor Speed High Limit [RPM]. When the speed is below the specified limit in parameter 1-86 Trip Speed Low [RPM] (except
when starting or stopping), the drive trips.
9.4.47 ALARM 50, AMA Calibration Failed
Cause
A calibration error has occurred.
Troubleshooting
• Contact the Danfoss supplier or Danfoss service department.
9.4.48 ALARM 51, AMA Check Unom and Inom
Cause
The settings for motor voltage, motor current, and motor power are wrong.
Troubleshooting
•
Check settings in parameters 1-20 to 1-25.
9.4.49 ALARM 52, AMA Low Inom
Cause
The motor current is too low.
Troubleshooting
• Check the settings in parameter 1-24 Motor Current.
9.4.50 ALARM 53, AMA Motor Too Big
Cause
The motor is too big for the AMA to operate.
Troubleshooting
•
Check the settings in parameter group 1-2* Motor Data.
9.4.51 ALARM 54, AMA Motor Too Small
Cause
The motor is too small for the AMA to operate.
Troubleshooting
• Check the settings in parameter group 1-2* Motor Data.
9.4.52 ALARM 55, AMA Parameter Out of Range
Cause
The AMA cannot run because the paramenter values of the motor are out of the acceptable range.
Troubleshooting
•
Check the settings in parameter group 1-2* Motor Data.
9.4.53 ALARM 56, AMA Interrupted by User
Cause
The AMA is manually interrupted.
Troubleshooting
• Re-run the AMA calibration.
9.4.54 ALARM 57, AMA Internal Fault
Cause
Internal fault.
Troubleshooting
Try to restart the AMA. Repeated restarts can overheat the motor.
Danfoss A/S © 2021.11
Maintenance, Diagnostics, and
Troubleshooting
AQ262141314214en-000301 / 130R0880 | 145